Central Japan Railway Company says all train services on the Tokaido Shinkansen line resumed as normal starting with the first train of Tuesday at 6 a.m., the day after a collision of railway maintenance vehicles caused severe disruptions to the services.

The operator says a maintenance vehicle collided with another, stopped vehicle when it was traveling between Toyohashi and Mikawa-Anjo stations early Monday morning, causing both to derail. The incident left two workers injured.

Services between Hamamatsu and Nagoya stations were affected throughout Monday. The operator said the accident led to the cancellation of 328 bullet trains as of around 11:30 p.m., affecting an estimated 250,000 passengers.

The operator offered an apology at a news conference on Monday night. Officials say the maintenance vehicle's driver applied the brakes, but it didn't slow down for unknown reasons.